@article{PismaZhETF.40.303,
    title = {Electronic phase transitions due to correlation effects},
    author = {Katsnel'son, M. I. and Trefilov, A. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {40},
    issue = {7},
    pages = {303},
    year = {1984},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19031.shtml},
}